[clang] [HIP] Replace use of `llvm-mc` with `clang` (PR #112041)

[Aaron Ballman via cfe-commits]

AaronBallman wrote:

Huh, I'm also confused -- you're right, this file has changed and shouldn't be failing in that way. Maybe the pre-commit CI bot is not replacing the files as expected? I'm not seeing anything in the logs about that kind of problem, though. CC @tstellar @asl for additional eyes

https://github.com/llvm/llvm-project/pull/112041